Outboard Engine – The engine is mounted outside the boat on the; all of the engine is visible. Steering is controlled by either a steering wheel or hand tiller, and propulsion comes from water being pushed by the .
Outboard engines are popular withand aluminium boats; they come in many different power ranges and models and can be either two or four-stroke.
Inboard Engine – The engine and most of theare mounted inside the vessel towards the center. Only the propeller and propeller shaft protrude outside the hull. Propulsion is achieved by water being pushed by the propeller, which moves the boat forward. When the steering wheel is turned, it moves a rudder to control the direction of the boat.
Inboard/Outboard Engine – The engine unit is installed inside the hull while the lower unit (composed of the driveshaft and propeller) is outside the hull. Propulsion is achieved by water being pushed by the propeller, and steering is controlled by a steering wheel.
Jet Engine – The engine and pump impeller are mounted inside the vessel and no external propeller is needed.
Propulsion is achieved when water is sucked into the engine from an opening under the vessel, the water flows through the pump (which is powered by the engine) and forced out at very high pressure, moving the boat forward. Steering is controlled by a steering wheel or handlebars.
Jet Engines are found in PWC and jet boats.